Sodium vanadium hexacyanoferrate as a high-rate capability and long-life cathode material for Na-ion batteries

doi:10.1016/j.est.2022.105165

	Sodium vanadium hexacyanoferrate as a high-rate capability and long-life cathode material for Na-ion batteries
	Pan, Zu-Tao 2; He, Zheng-Hua 2; Hou, Jing-Feng 2; Kong, Ling-Bin 1,2
刊名	Journal of Energy Storage
	2022-09-01
卷号	53
关键词	Cathodes Charge transfer Fluorine compounds Lithium-ion batteries Sodium compounds Sodium-ion batteries Vanadium Vanadium compounds Capacity retention Cathodes material Electrochemical performance Hexacyanoferrates High rate Na-ion batteries Prussian blue analogues Rate performance Retention rate Sodium vanadium hexacyanoferrate
DOI	10.1016/j.est.2022.105165
英文摘要	Na-ion batteries have gradually begun to be commercialized due to their advantages of lower cost and wide source of raw materials, but more excellent electrochemical performance is required to compete with lithium-ion batteries. In this work, sodium vanadium hexacyanoferrate (NaVHCF) was designed and synthesized as a Na-ion cathode material to exhibit excellent electrochemical performance. The results show that the capacity retention rate of 1000 cycles at 2.5C rate is 72 %, the Coulombic efficiency is 100 %, and the capacity retention rate of 5000 cycles at 25C high rate is 65 %. After activating at a low current density of 2.5C, it still has a capacity of 42 mAh g−1 after 2000 cycles at a high rate of 25C, and the capacity retention rate is 92 %. The analysis shows that the excellent rate and long cycling ability are related to the three-dimensional open structure and microporous structure of NaVHCF. During the long cycle, the diffusion coefficient of sodium ions gradually increases and the charge transfer resistance gradually decreases, which improves the battery lifespan. These results suggest that sodium-ion batteries are one step closer to commercial application. © 2022 Elsevier Ltd
WOS研究方向	Energy & Fuels
语种	英语
出版者	Elsevier Ltd
WOS记录号	WOS:000822018300007
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/159078]
专题	材料科学与工程学院
作者单位	1.School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou; 730050, China 2.State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Lanzhou University of Technology, Lanzhou; 730050, China;
推荐引用方式 GB/T 7714	Pan, Zu-Tao,He, Zheng-Hua,Hou, Jing-Feng,et al. Sodium vanadium hexacyanoferrate as a high-rate capability and long-life cathode material for Na-ion batteries[J]. Journal of Energy Storage,2022,53.
APA	Pan, Zu-Tao,He, Zheng-Hua,Hou, Jing-Feng,&Kong, Ling-Bin.(2022).Sodium vanadium hexacyanoferrate as a high-rate capability and long-life cathode material for Na-ion batteries.Journal of Energy Storage,53.
MLA	Pan, Zu-Tao,et al."Sodium vanadium hexacyanoferrate as a high-rate capability and long-life cathode material for Na-ion batteries".Journal of Energy Storage 53(2022).